1. W

    URGENT i need your help guys

    Merry Christmas to all of you and happy new year. Guys i have a huge problem with the smoke coming out from oil dipstick it has been 4 years of fixing and results are same. The car is W204 2010 year 2.2 diesel om651 engine with single turbo after all the struggles and bunch of fixing i gave up...
  2. Y

    Warm Start Rattling Sound for 7 seconds like symptoms of timing chain/tensionner - OM651 Diesel

    Hey guys, I'm seeking some insights on a peculiar issue with my 2009 w212 equipped with the OM651 diesel engine. During warm engine restarts, particularly after the car has been stationary for around 15 to 50 minutes, I've been noticing a distinct rattling sound. While I'm not certain about the...
  3. I

    W204 OM651 722.6 Oil Filler Pipe Snapped

    Hey, I have a W204 OM651 with the 722.6 gearbox - turns out the filler pipe has snapped (completely sheared off) and oil can leak out when driving. Had the box recently serviced aswell, so thinking I replace the pipe and top up the transmission with oil. Is it easy to replace the pipe? TIA
  4. I

    W204 2010 C200 CDI Loss of power after injector seal change (No fault/error codes)

    Hi, I just had my injector seals changed (due to seeing a leak on my drive and my mechanic diagnosing it to be that) and now my car has a drastic loss of power. Before the injector seal change the cars power fine - engine spools up properly and boost wasn't an issue. When driving the car...
  5. M

    250 cdi W212 Can someone help me with injectors

    Hello, i own a E class W212 2009 250cdi with Om651 engine but since cold weather started i have a injector knocking noise until it warms up. So my question is what injector do i need i mean part number or is there really a need to code it. Injectors that i have have this P/n A6510702887 So my...
  6. M

    Need someone with Xentry please W212

    Hello, can someone please send photos of xentry Y94 valve/quantity control valve where it says how it works and when it starts to work when engine is off? I know that it should work when fuel is above 20c temp. I have W212 Om651 250 cdi 2009 engine and every day in winter after short drive rail...
  7. B

    2017 Vito CDI 116 turbo leak

    Hi Everyone. Just had my Van serviced yesterday and I made a comment that there is a louder than normal hiss from the turbo when driven hard up hill etc. The dealer sent me a pic showing a oily looking connection to the turbo. I complained about this issue 12 months ago and they changed the high...
  8. M

    Need help with fuel related Codes

    Hello, i have w212 om651 2009 sedan, but sometimes when its cold the rpm fluctuates by 50/100 up in idle other than that it runs good acceleretes good with kickdown.But after i replaced the quantity control valve on hp fuel pump Engine light has come on dash after reving it to 2k rpm and power...
  9. M

    Help please new Quantity control valve errors

    Hi, i have e250 cdi OM651 engine 2009 I had rough idle on cold with rpm jumping every few seconds by 50/100 rpm no errors or check engine light.Now i replaced the qcv on hp pump today with new one but after starting it it ran fine but after reving to 2k rpm eml came on, after reading codes i...
  10. G

    VITO / V Class.... are Euro 6 OM651 engines as bad as Euro 5 OM651 engines?

    Hi all, I expect I am opening a can of worms here, with this but I'd like to get some feedback from people with real world experience. My 200,000 mile 2006 E Class Estate, which I love, just isn't big enough. So I am looking into getting a Vito / Viano / V class. I'm not in the money for a...
  11. Arnison XXVI

    OM651 Timing Chain?

    Hi people new to the forum, let me know if I've posted on the wrong place, I'm 21 and just bought a W212 E250 CDI, I remember I was 10 and my dad bought one out the showroom and I lusted after one since that day. I read before buying about the timing chains, but can't find any answers as to how...
  12. T

    Dishonest Garage? Or they might be right...?

    Hello all my friends! Hope this thread finds everyone well! Last Monday, I was driving my C220 CDI COUPE (2011 Reg, C204) on the motorway. The car was all fine until the moment I was trying to overtake a car and hardly depress the gas. As soon as I depressed the gas and rev hit 3000 RPM, there...
  13. R

    Refilling coolant?

    2012 om651 c250 Ive changed the coolant thermostat housing cos it was leaking and obviously I lost coolant, my question is when I refill it is there a procedure as I've read that the housing opens up at a temperature. Cos as I've refitted it the coolant level hasnt dropped even with the engine...
  14. R

    What is this pipe, its leaking air.

    What is the pipe with the sleeve over it. When I turn ignition on but without turning over the engine this pipe hisses then stops after about 20 seconds. I have these codes showing and am trying to locate the problems without paying for help as I lost my job from the covid lockdown.
  15. S

    Engine Failure on Mercedes C220 2.1l diesel OM651

    Hiya i am a new bee? i am after some technical help. i have a 2012 c220 2.1diesel om651 witch had an engine fault i removed the engine and striped it down no inspection found the big end bearings seized to the crankshaft so the engine was sent to my local machine shop were they polished the...
  16. M

    W204 2011 OM651 Engine Mounts Question

    Hey Guys, I got all brand new engine mounts and gearbox mount from my dealer. I was reading over WIS document explaining the whole procedure of what needs to be taken out etc. It looks like there is a lot to do it. You have to unbolt alternator and also A/C compressor and also document is...
  17. S

    OM651 MAP Manifold Absolute Pressure Sensor

    I spent ages searching on line for the location of this sensor and also got some unhelpful advice from an independent I did not know about my error code (P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent) not making sense. There is a YouTube video of someone changing...
  18. M

    New member - Help with service record please

    Hello all, my names Matt and I'm a new member here! I don't actually own a Merc yet as my username suggests, but I am looking for a W447 114 Vito, and I'm close to pulling the trigger on one. The only thing that I'm not sure about is a couple of aspects of the service history. The vehicle I'm...
  19. M

    W204 C200 OM651 Intake Manifold

    Hey Guys, I have the car for over a year and drove it around 40 000km through the year. Currently car has 140 000km. From time to time was throwing error code PA200A21. Recently it went into a limp mode also. At home it showed me: P200A21 - The charge movement flap (cylinder 1) has a...
  20. simonlondon24

    E250cdi om651 engine metalic noise when hot

    Hi everyone. As I have probably search everywhere and could find anything similar, I'm having to ask the question myself. Have anyone come across this metallic poping, pinging background noise? It only happened when the engine is warmed up. I have took the drive belt off to test it, and noise...

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